Introduction

Traffic accidents are a leading cause of non-natural death for US citizens. There were 33,244 fatal motor vehicle crashes in the US in 2019 in which 36,096 deaths occurred. This resulted in 11 deaths per 100,000 people and 1.11 deaths per 100 million miles traveled (iihs.org). An additional 4.4 million are injured seriously enough to require medical attention. All the evidence suggests that the US suffers the most road crash deaths among high-income countries, about 50% higher than similar countries in Western Europe, Canada, Australia and Japan (asirt.org). Therefore, it is urgent to understand the underlying mechanisms of the occurrence…


Introduction

Vehicles are important tools that allow flexibly in our lives. We can go shopping any time when stores are open regardless of weather. We can also drive from the east coast to the west coast of the US. My friend did so and that was an amazing trip said him. He saw many beautiful natural sceneries. While our lives are facilitated by vehicles, you may want to ask yourself the questions below:

- How do I choose a car?
- What year, make and model? …


Introduction

The National Association of Realtors expected rates still keep at a low level as 2020. To date, mortgage rate is near record lows, which signifies an economy that continues to struggle. This rate environment is advantageous for those who are seeking a refinancing to offload the financial burdens. Therefore, it is a good idea to apply for refinancing as soon as possible in order to secure a low rate. It is beneficial to understand what financial features lenders focus on to make decisions and how these features play a role in approving or denying applications.

This project addressed these questions…


Introduction

Concussions are mild traumatic brain injuries and a common occurrence in contact sports. It is now a major public health problem in the USA. The figure below demonstrated that >200 concussion cases occur per season, which is equivalent to about one case per game.

Cited from vox.com

A topic modeling using natural language processing has demonstrated that sports concussion currently is and will remain a hot research topic in the next 5 years.


Introduction

When writing a research proposal, the first thing is to choose a research topic, which many junior researchers are still struggling with. Some may believe that reading sufficient systematic review papers would help them target a research topic. But it is not sufficient at all. When finding a research topic, it is important to systematically investigate the development of research topics and understand how the research field has been evolving. Identifying hot research topics, clustering research articles with a hot topic, and reading these clustered articles will be more efficient and more focused for those junior researchers. …

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